function A(){
	//require函数的返回值：define中的module.exports
	var common =  require('./common/common.js');
	console.log("A from damu&"+ common());
}

function B(){
	var common =  require('./common/common.js');
	console.log("B from damu&"+ common());
}

function C(){
	var common =  require('./common/common.js');
	console.log("C from damu&"+ common());
}

exports.A =A;
exports.B =B;
exports.C =C


